Key points are not available for this paper at this time.
Possible advantages of replacing the Peccei-Quinn U (1) quasisymmetry by a group of genuine flavor symmetries are pointed out. Characteristic neutral Nambu-Goldstone bosons will arise, which might be observed in rare K or decays. The formulation of Lagrangians embodying these ideas is discussed schematically.
Frank Wilczek (Mon,) studied this question.